Sound Signal Circuit between Radio Receiver and Multi-display Controller

AUDIO / VISUAL: REAR SEAT ENTERTAINMENT SYSTEM: Sound Signal Circuit between Radio Receiver and Multi-display Controller

Sound Signal Circuit between Radio Receiver and Multi-display Controller

DESCRIPTION

This is the sound signal circuit from the radio receiver to the multi-display controller.

WIRING DIAGRAM

















INSPECTION PROCEDURE

PROCEDURE

1. CHECK RADIO RECEIVER




(a) Reconnect the L52 receiver connector.
(b) Using an oscilloscope, check the signal waveform between each terminal and the body ground according to the conditions, as shown in the chart below.
Signal waveform:






NG -- REPLACE RADIO RECEIVER
OK -- Continue to next step.

2. CHECK SATELLITE RADIO TUNER AND/OR DISC PLAYER
(a) Check if the satellite radio tuner and/or disc player are equipped on the vehicle.

Result





D -- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SATELLITE RADIO TUNER)
C -- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - DISC PLAYER)
B -- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SATELLITE RADIO TUNER)
A -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - MULTI-DISPLAY CONTROLLER)




(a) Disconnect the L52 receiver connector.
(b) Disconnect the R32 controller connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MULTI-DISPLAY CONTROLLER
4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SATELLITE RADIO TUNER)




(a) Disconnect the L52 receiver connector.
(b) Disconnect the R29 tuner connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (SATELLITE RADIO TUNER - MULTI-DISPLAY CONTROLLER)




(a) Disconnect the R29 tuner connector.
(b) Disconnect the R32 controller connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. REPLACE SATELLITE RADIO TUNER WITH NORMAL ONE AND CHECK
(a) Replace the satellite radio tuner with a normal one and check if the same problem occurs again Removal.
OK:
Same problem does not occur.
NG -- REPLACE MULTI-DISPLAY CONTROLLER
OK -- END (SATELLITE RADIO TUNER IS DEFECTIVE)
7. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - DISC PLAYER)




(a) Disconnect the L52 receiver connector.
(b) Disconnect the R16 player connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

8. CHECK HARNESS AND CONNECTOR (DISC PLAYER - MULTI-DISPLAY CONTROLLER)




(a) Disconnect the R16 player connector.
(b) Disconnect the R32 controller connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

9. REPLACE DISC PLAYER WITH NORMAL ONE AND CHECK
(a) Replace the disc player with a normal one and check if the same problem occurs again Removal.
OK:
Same problem does not occur.
NG -- REPLACE MULTI-DISPLAY CONTROLLER
OK -- END (DISC PLAYER IS DEFECTIVE)
10. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SATELLITE RADIO TUNER)




(a) Disconnect the L52 receiver connector.
(b) Disconnect the R29 tuner connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

11. CHECK HARNESS AND CONNECTOR (SATELLITE RADIO TUNER - DISC PLAYER)




(a) Disconnect the R29 tuner connector.
(b) Disconnect the R16 player connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

12. CHECK HARNESS AND CONNECTOR (DISC PLAYER - MULTI-DISPLAY CONTROLLER)




(a) Disconnect the R16 player connector.
(b) Disconnect the R32 controller connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

13. REPLACE SATELLITE RADIO TUNER WITH NORMAL ONE AND CHECK
(a) Replace the satellite radio tuner with a normal one and check if the same problem occurs again Removal.
OK:
Same problem does not occur.
NG -- REPLACE DISC PLAYER WITH NORMAL ONE AND CHECK
OK -- END (SATELLITE RADIO TUNER IS DEFECTIVE)
14. REPLACE DISC PLAYER WITH NORMAL ONE AND CHECK
(a) Replace the disc player with a normal one and check if the same problem occurs again Removal.
OK:
Same problem does not occur.
NG -- REPLACE MULTI-DISPLAY CONTROLLER
OK -- END (DISC PLAYER IS DEFECTIVE)